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Chapter 3: Statistics Refresher
Test Description: Tests and Measurements
Instructions: Answer all questions to get your test result.
1) Relatively few scores fall at the high end of the distribution
A
Kurtosis
B
Positively Skewed
C
Negatively Skewed
D
Effect Size
2) The steepness of a distribution in its center
A
Variance
B
Kurtosis
C
Variability
D
Skewness
3) Stretching the skewed curve into the shape of a normal curve and creating a corresponding scale of standard scores
A
Normalized standard score scale
B
Normalizing a distribution
C
Coefficient of determination
D
Correlation relation
4) Contain equal intervals between numbers
A
Interval scales
B
Nominal scales
C
Ordinal scales
D
Ratio scales
5) A straightforward, unmodified accounting of performance
A
Average deviation
B
Raw score
C
Z score
D
Variance
6) The interquartile range divided by 2
A
Standard scores
B
Semi-interquartile range
C
Median
D
Interval scales
7) Interval scales with a true zero point
A
Ratio scales
B
Nominal scales
C
Interval scales
D
Ordinal scales
8) The collective influence of all factors on a test score beyond those specifically measured
A
Variance
B
Outliers
C
Errors
D
Skewness
9) Numerical index that expresses the relationship between variables
A
Standard deviation
B
Correlation coefficients
C
Effect size
D
Variability
10) Statistically combining information across studies to produce single estimates of the data under study
A
Meta-Analysis
B
Effect Size
C
Cohen's D
D
Blinding
*select an answer for all questions
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